I live in the North, but need to take my partner to Heathrow for a flight.

She needs to be there at 8:50 am. We'll be coming down the M1, and obviously hitting rush hour.

Various bits of software offer journey times, but they always seem overly optimistic.

If any locals could give me an idea as to what to expect on the M25 at 7-8am, I'd be most grateful.

Many thanks,

Ed